Ohloh
=====

In a similar style to my [Git vs. SVN answer][1], [Ohloh](http://www.ohloh.net/repositories/compare) has been crawled (only) three times by the [Internet Archive's Wayback Machine](http://wayback.archive.org/web/*/http://www.ohloh.net/repositories/compare), but July 2011 is unreadable:

[August 2010][2]
---
* Git: 26,485 repositories (11.3% of total)
* Mercurial: 2,548 repositories (1.1% of total)
* Ratio: 10.4:1.0

[May 2011][3]
---
* Git: 116,224 repositories (35.3% of total)
* Mercurial: 3,753 repositories (1.1% of total)
* Ratio: 31.0:1.0

[February 2012][4]
---
* Git: 124,000 repositories (26% of total)
* Mercurial: ?

[June 2012][5]
---
* Git: 134,459 repositories (27% of total)
* Mercurial: 11,238 repositories (2% of total)
* Ratio: 12.0:1.0


----------


Eclipse Community Survey
===

Another source of data is the Eclipse Community Survey. Git values below are for Git/GitHub.

2009 ([pdf][6])
----

* Git: 2.4%
* Mercurial: 1.1% <sup>(Note: Hg listed under "other" in 2009 report, but itemised in 2010 report)</sup>
* Ratio: 2.2:1.0

2010 ([pdf][7]) 
----

* Git: 6.8%
* Mercurial: 3%
* Ratio: 2.3:1.0

2011 ([pdf][8])
----

* Git: 12.8%
* Mercurial: 1.1%
* Ratio: 11.6:1.0

[2012][9]
----

* Git: 27.6%
* Mercurial: 2.6%
* Ratio: 10.6:1.0


----------


Summary
===

These appear to show that, of the open source repositories registered on Ohloh, and of the developers using Eclipse, Git is a good order of magnitude more popular than Mercurial.


 [1]: http://programmers.stackexchange.com/a/136207/25708
 [2]: http://web.archive.org/web/20100821122603/http://www.ohloh.net/repositories/compare
 [3]: http://web.archive.org/web/20110519195626/http://www.ohloh.net/repositories/compare
 [4]: http://www.ohloh.net/repositories/compare
 [5]: http://www.ohloh.net/repositories/compare
 [6]: http://www.eclipse.org/org/press-release/Eclipse_Survey_2009_final.pdf
 [7]: http://www.eclipse.org/org/community_survey/Eclipse_Survey_2010_Report.pdf
 [8]: http://www.eclipse.org/org/community_survey/Eclipse_Survey_2011_Report.pdf
 [9]: http://ianskerrett.wordpress.com/2012/06/08/eclipse-community-survey-result-for-2012/